Nut-lock.



Pa tented Feb, 16, 15) 5 June/kw MoRGaN J JoNEs .T) q 13 fl mkv" UNITEDSTATES MORGAN J. JONES, OF

I? m )FFIGE.

KINGMAN, ARIZONA.

NUT-LOCK.

To all whom it may concern Be it known that I, MORGAN J. JoNEs, acitizen of the'United States, residing at Kinginan, in the county ofMohave and State of Arizona, have invented certain new and usefulImprovements in Nut-Locks, of which the following is a specification,reference being had to the accompanying draw lngs. I

This invention relates to nut locks and has for its primary object toprovide means for positively and securely locking a nut upon-a bolt toprevent the same from working off of the bolt by vibration of the parts.

It is a further object of the invention to produce a device of thischaracter which may be employed in instances where the nut is to beapplied to a bolt not easily accessibl'c.

In its more specific aspect, the present in vention contemplates theprovision of a biting'or locking pin loosely mounted in the nut andextending in parallel relation to the bore thereof, said pin beingnon-rotatable and provided with correspondingly beveled ends to producebiting points which project slightly beyond the faces of the nut,whereby upon the application of a jam nut to the bolt, the same willengage the outer point of the pinand force the other point thereof intothe face of the object through which the bolt is disposed, said pineffectually preventing turning movement of the nuts upon the bolt orwith relation to each other.

With the above and other objects in view,

.the invention consists in the novel construe tion, combination andarrangement of parts to be hereinafter more fully described, claimed.andillustrated in the accompanying drawing, wherein- Figure l is alongitudinal section through the two nuts, showing my improved loclc ingmeans therefor; Fig. 2 is a face view of the nut provided with thelocking pin; and Fig. 3 is a detail perspective view of the pin removedfrom the nut.

Referring in detail to the drawing, designates a casting or other objectthrough which the bolt indicated at 6 is disposed.

7 designates a nut adapted to be threaded upon the bolt against thefaceof the casting 5. At one side of the bore of the nut 6 and inparallel relation thereto the same is provided with an opening 8 whichextends entirely through the nut. The locking Specification of LettersPatent.

Patented Feb. 16, 1915 1914. Serial no; s5e,407.

or biting pin 9 is loosely mounted in the opening 8 so that the same isfree to move "face thereof and upon relatively opposite sides of theopening 8, is swagedinwardly to form the stop projections 12 whereby thelocking pin 9 is retained within the opening 8 and its longitudinalshifting movement limited.

When the nut 7 is threaded upon the bolt (3, one of the beveled ends 10of the pin 9 faces in the direction of turning movement of the nut sothat it will ride against the face of the casting 5 and move outwardlyin the opening 8 as the nut is threaded into tight frictional engagementagainst the cast-. ing. A jam or look nut 13 is then threaded upon thebolt (3 against the outer face of the nut 8, and as this latter nut isengaged with the outer beveled end of the pin 9, said pin is forcedinwardly and, its inner biting point 11 embedded into the face of themetal casting 5. The outer point 11 of thepin 9 also cuts into the faceof the lock nut 13. It is thus apparent that the nut 8 is held againstreverse turning movement upon the bolt (3 and the lock nut 13 is alsoheld against such turning movement with respect to the nut 8. In orderto remove the nuts, a suitable wrench must be applied to the nut 8 andsufficient power applied thereto so that the inner end of the biting orlocking pin 9 will cut out a chip or fragment of metal from the face ofthe casting, 5, as the nut is turned. It is manifest therefore that thebiting action of the pin 9 is sufficient to overcome any tendency of thenuts to work off of the bolt through strains or vibrations upon themachine or part to which the lock nut is applied.

As the single locking pin employed is entirely disposed within the bodyof the nut, the same is completely hidden from view and there are noprojecting parts which would preclude the proper application of the nutto a bolt in places where the bolt is not easily accessible.

It is of course understood that the nuts and pins may be furnished invarious sizes,

and the improved lock nployed upon nuts of the several forms no incommon use.

1. The combination of a not provided with an opening of a locking pinloosely mounted in 1.1 opening having biting points at oppositeprojecting beyond the opposite faces of the nut, sa d not being providedwith 1115 operating to limit the longitudinal 1m,- nent of the pin andto prevent rotation thereof, and a nut also adapted to he threaded uponthe bolt into engagement witl' the outer iace of the nut and into bitingen: zgement with one end of said pin, the other end of the pin beingmoved by the jan nut into biting engagement with the face of the memberthrough which the bolt is disposed.

2. The combination a nut provided with an opening in parallel relationto its grea e-o7 bore, a locking pin loosely disposed in said openingand having correspondingly beveled end faces to produce biting pointsthereon adapted to project beyond the opposite faces engagement with theface of the object through which the bolt is disposed.

lnttestimony whereof I hereunto aflix 'my signature in the presence oftwo witnesses.

MORGAN J. JONES. Witnesses:

C. A. BRACKHURST. H. E.'KLE1N.

